5C20.10 Capacitor with Dielectrics

Charge up plates using Van de Graaff. Disconnect wire from top of sphere to fixed plate at plate end. Insert and remove a dielectric from a charged parallel plate capacitor while it is attached to an electroscope. Observe changes in electroscope pointer.

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Setup Requirements: Assembled as needed. May need to dry out belt. Problem with parts under dome of larger version coming loose.

 

Equations: CV = Q   C proportional to dielectric constant.

 

Safety Issues: Shock from Van de Graff and wires attached to it.